Sash construction



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2 Sheets-Sheet l W. S. HAMM IET L SASH CONSTRUCTION Filed 'NOV. l5, 1955 www L A m M M A H S. w

SASH CONSTRUCTION 2 Sheets-Sheet 2 Filed Nov. l5, 1953 l I l Patented Sept. 3, 1935 UNITEDTsTATE This invention has todo withsash construction, and is particularly concerned .with the way inl which the rail members are. jointed together `at .thecornera f Y. 1

The corner joint arrangements whichhave been used in the past in connection with sheet metal rail members` do notgive satisfactory' rel sults when used with rail members made of `thin i applicable to sheet aluminum rail membersfal ,though not in any way limited in its application tothe same. v m ,l `Another importantxobject is :to` provide an imv 1 proved way of securing theLfshaped corner inserts` to the sheet aluminum without 'liability of `the edges ofithe'screwapertures int'the aluminum being forced outl of shapeby the strains to which Ltheirail members. areV ordinarily subjected. jWhile the foregoing*r statements are indicative i ina general way ofthelnature offfthe invention, otherl objects and `advantages, will be apparent to those skilled in the art .upon a` full understanding of the improved cornerjointV construction.

`A preferred' embodiment of .the .invention is presented herein for fthe purpose of exempliica-` tion; but it will et course be appreciated that the invention is susceptible of embodiment in other structurally modified forms coming equally within the scope of the appended claims.

In the accompanying drawings: y Fig. 1 is an inside face view of the right hand side of a thin-Walled sheet aluminum sash, inV

. present invention;

Fig. 2 is a sectional view through the lower right hand corner of the sash, taken on the median plane of the sash, with the glass and glazing strips removed and with the end portions of the rubber side rail extension and rubber bottom rail sealing strip broken away for clearness; c

Fig. 3 is a perspective view of the lower corner insert shown in Fig. 2, with a portion of one of the side flanges broken away;

Fig. 4 is a perspective view of the lower corner strap shown in Fig. 2;

Fig. 5 is a sectional view through the `upper i 2.013207' Y c sASiI CoNsTnncTloN Hamm and Harry D. Seyisoin Elk#` hai'tyrlnd., assignors to The AdlaireCompany," Chicago, Ill.,` a corporationlef illinois l Applicationlnivember 15,1933, serial No. 698.632. c

' ciaims. (01.189416) rail. taken on the `lined-'9 of `Fig. 2; EL. l

l Fig. 1i) is a horizontal `sectionthrough` the side i rail, takenron the line i @1 -lil ofFg. andf.; .f

u Fig. llis a vertical section through -the lbotten corner of the sash, takenfgon tliemedianplane or the sash, with the glassugand glazing strips y removed and with the upper portion of thefrnub- Yber side rail extension broken away; 5 Fig. 6-is a perspective View. of kthe` insert shown :1

in Fig. 5; j

. 1;.. 5 :1 Fig. 7 is avertical section.g.throughzthe op rail7 taken on the line 'll-iwf Fig.; 5j; l Fig. 8 is a horizontalY sect *,rail, takenonthe line 8-,3 of

hrougli' side as. 5;y f f L Fig.V 9-is .a` horizontal section through the side rail,- taienon the line idf! i; ,of FigxZi. al

In order to save spacefandjavoid repetition, onlythe right-hand-side lof a sashfis-shownwfin Fig.` 1, -but it will of course' ,be understoodthat the left-hand side 'ismerelya duplication ofrthe right-hand side. The jointgin theiower right` hand cornerof the `sash is had'betweenahorizontally extending bottom railfifand "avertioally extending side rail H. In `theparticular sash structure sho-wn, the bottom rail .iiiiisiprovi'ded with a-loclr i2 of the type disclosed in Larson Patent No. 1,857,294, and the siderrailii is: provided witha rubber extension strip :i3"ofthe1character set forth in an earlier applicationiiled by William S. Hamm bearing Serial No.` 6iO,6i5`,but-'thesei features have no bearing on the present invention other than to the extent to whichltheylinayaiiect the cross-sectional shaping of the?v rail! members and the Vreinforcement. lli'inthelower'cornerbf the sash.

The rail members i8 and Il are made of thin sheet aluminum and the abutting ends of such members are mitered at I5. The ends are telescoped over the legs it and il of the previously mentioned reinforcement I4, Ywhich reinforcement consists of an L-shaped aluminum iiller block. The horizontally extending leg I6 of the block, which extends into the end of the bottom rail I, is provided with upwardly extending side anges I8 (see Fig, 3) and is also provided with a deep channel i9 between the flanges in which the bolt 2E! of the lock l2 is adapted to slide. The angcs i3 project upwardly into the narrow side grooves 2l (see Fig. ll) which are formed in the upper portion of the bottom rail by the presence of the reentrant glazing groove 22. 'I'he vertically extending leg lll of the block is provided with somewhat similar flanges 23 which project into the narrow grooves 2li (see Fig. 9) in the side rail II. An aperture 25 is cut in the lower portion of the leg I1, in alignment with the bottom and sides of the channel I9, to accommodate the nose of the bolt 20. As will be observed, the cross-sectional shapes of the legs I6 and I1 of the block are such as to provide a snug nt of the legs within the ends of ythe rail members.

At the time that the ends of the rail members are telescoped over the ends of the block I4 into abutment with each other at the rniter I5, an L-shaped metal strap 26 (see Fig. 4) is applied to the outer` edges of the rail members at the corner in spanning relation to both members. In the particular embodiment shown the horizontally extending leg 21 of the strap is positioned ilatly against the outer edge 28 of the bottom rail in the groove 29 provided for the rubber sealing strip 30 while the vertically extending leg 3I of the strap is positioned flatly against the outer edge 32 of the side rail in the groove 33 provided for the base portion 34 of the rubber extension strip I3. After the parts have been assembled in the manner described, the strap, rail members and filler block are drawn tightly together by screws 35 and 36 and the rail members and ller blocks are further drawn together, beyond the ends of the strap, by additional screws 31 and 38, The tapped holes in the block which receive the screws 35 and 35 are conically counterbored at 39 and 50 (see Figs. l and 11) and the thin sheet aluminum portion of the edges of the rail members at the locations of the screw apertures are conically countersunk at 4I and 42. The screws employed have conical heads 43, which heads are drawn tightly into the countersunk portions of the rail members in the counterbored portions of the block, resulting in a rm clamping lit which precludes of any tearing or deformation of the thin aluminum material at the location of the fastening means. The same type of counterbored and countersunk interlock between the rail members and block is also provided at the location of the end screws 31 and 38.

By using the strap 26 in conjunction with the filler block I4 a very strong and rigid corner joint is produced with a close and permanent iit of the mitered edges I5. In the particular embodiment shown the strap 26 is provided, below the screw 35, with a rectangular aperture 44 for the reception of the bolt 20, but in those sash structures wherein a higher bottom rail is employed, the screw 35 can be positioned below the bolt, permitting the strap to terminate ush with the lower edge of the bolt and obviating the necessity of an aperture for the accommodation of the latter.

The upper corner of the sash, between the side rail member II and the top rail member 45, contains another L-shaped block 46 (see Fig. 6), which block has a vertically extending leg 41 which projects down into the upper end of the side rail member II and a horizontally extending legy 48 which projects into the end of the top rail member. The leg 48 of the block is fastened in the adjacent end of the top rail member 45 by screws 49, which screws preferably clamp countersunk portions 50 of the upper edge of the rail member down into counterbored seats I in the block. The leg 41 of the block is fastened in a little different way however in the upper end of the side rail member II, owing to the fact that the leg 41, along with the top rail member 45, must be withdrawn vertically from the side rail member II before the sash can be glazed or reglazed. For this reason, the apertures 52 in the outer edge of the member II are beveled without being countersunk, thereby permitting removal of the leg 41 of the block as soon as the screws 53 have been taken out.

We claim:

l. In sash construction, two hollow thin-walled sheet metal rail members arranged in right angular abutment with each other at one of the lower corners of the sash, an L-shaped ller block positioned within the ends of the rail members at the corner, an L-shaped strap positioned against the outer edges of the rail members at the corner, and fastening means for the block and strap extending through both the block and the strap and the interposed portions of the rail members.

2. In sash construction, two hollow thin-walled aluminum sheet metal rail members provided with glazing grooves at their inner edges, said' members being arranged in right angular mitered abutment with each other at one of the lower corners of the sash, an L-shaped aluminum filler block positioned within the ends of the rail members at the corner and provided with spaced flanges which embracethe side walls of the glazing grooves, an L-shaped sheet metal strap positioned against the outer edges of the rail members at the corner, and means passing through the block and the strap and one end of one of the rail members in the median plane of the sash for releasably fastening the parts together.

WILLIAM S. HAMM. HARRY D. SEVISON. 

